The note evokes an ethereal, bracing coolness, akin to the pristine air found at altitude. It presents as an ultra-clean, sharp, and intensely crisp sensation, with a mineralic edge that can lean subtly metallic or flinty. There's a distinct ozonic and aquatic transparency, reminiscent of meltwater or the sterile chill of pure ice. Its initial impact is piercingly invigorating, an olfactory shock of pure, dry coldness, often shimmering and expansive in its projection. While not heavy, it possesses a certain crystalline texture, simultaneously smooth and vast. The intensity can be significant upon application, slowly softening into a more refined, sustained chill, often carried by supporting musks or ethereal woods. It behaves primarily as an exhilarating top note, providing an immediate sense of clarity and space, but its signature 'cold' character can extend gracefully into the heart, maintaining a refreshing, almost sterile aura. There is an absence of warmth or softness, replaced by an invigorating, almost stark purity.